10m contours were prepared from SRTM3 v3 data. Data were processed with QGIS, GRASS, mdnoise, ogr2osm, mkgmap.
SRTM data source: https://lpdaac.usgs.gov/data_access/data_pool/
File PL_SRTM_img contains file img dedicated to Garmin GPS. © CC BY-NC 4.0 AP http://www.gmaptool.eu/
File PL_SRTM3_pbf contains data in OpenStreetMap format. Data are free to any use.